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3 Sheet-Sheet 1. GB.

(No Model.)

S. K. WHITE & S. T. LOOKWO CLOTH FOLDING MACHINE.

No. 370,835. Patented 00 5. 4, 1887.

I I1 immmlmmn ll III N. PETERS. Pham-Limn n ner. Washmgtan, 0.1;

I (No Model.) 3 Sheets-Sheet 3.

S. K. WHITE & S. T. LOUKWOOD.

CLOTH FOLDING MACHINE.

Patented Oct.

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I UNITED STATES PATENT OFFICE.

SAMUEL K. WHITE AND SAMUEL T. LOOKWOOD, OF CHICAGO, ILLINOIS; SAIDLOOKWOOD ASSIGNOR TO SAID WHITE.

CLOTH-FOLDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 370,835, dated October4, 1887.

Application filed March 1, 1886. Renewed June 29, 1887. Serial No.242,863.

To all whom. it may concern.-

Be it known that we, SAMUEL K. WHITE and SAMUEL T. LOOKWOOD, of Chicago,in the countyof Cook and State of Illinois, have invented a certain newand useful Improvement in Cloth-Folding Machines; and we do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to an improvement in cloth-folding machines; andit consists in the matter hereinafter described, and pointed out in theappended claims.

The machine herein illustrated is more especially intended for use infolding cloth in the process of making bags but the principal featuresof construction thereof are applicable to machines for folding cloth forother purposes, as will hereinafter appear.

The invention may be more readily understood by reference to theaccompanying drawings, in which-- Figure 1 is a plan view of acloth-folding machine illustrating our invention. Fig. 2 is a centrallongitudinal section of the same, with parts in elevation, taken uponline :0 w of Fig. 1. Fig. 3 is an enlarged detail crosssection of a partof the folding devices at one end of the machine, taken upon line y y ofFig.1 and 0c 00 of Fig. 4. Fig. 4 is a detail section of the parts shownin Fig. 3, taken upon line a: w of said figure. Fig. 5 is an enlargeddetail cross-section of the machine, taken upon line z zof Fig. 1. Fig.6 is an en larged view of the movable cloth carrier .or folder in theposition shown in Fig. 1. Fig. 7 is a sectional view of the same, takenupon line 00 m of Fig. 6. Fig. 8 is a detail view of a device foractuating by hand the clamp for holding the folded edges of the cloth.

As illustrated in the said drawings, A is the machine-frame.

B is a reciprocating cloth carrier or folder, consisting, as shown, ofend castings or frames B and parallel folding-bars B B between whichthecloth web passes in the act of folding, and O G are stationarycloth-clamps located at either end of the path of the cl0th- (No model.)

carrier, and adapted to automatically engage and hold the folded edgesof the cloth delivered to them byv the folder-bars B B in thereciprocatory movement of the cloth-carrier.

D is a guide-roller, preferably located over the path of thecloth-carrier, and from which the web of cloth passes to bars B" of saidcarrier. Said roller is, as shown, mounted at one end of an elevatedframe, D, Fig. 2, located over the machine frame, and provided with asecond guide-roller, D and supporting crossbars D over which the clothweb is guided to the carrier from ,a loose pile or bolt located in anyconvenient place.

The frame D is omitted in the plan View, Fig. 1, of the accompanyingdrawings, in order to enable the parts beneath it to be more clearlyshown.

The cloth-carrier B is actuated from a main driving-shaft, E, provided,as shown, with the usual fast and loose pulleys, E and E, through themedium of a vertical shaft, F, driven from the main shaft by beve1-geare and f upon the shafts'E and F, respectively, and connected with thesaid cloth-carrier by devices hereinafter described. The clampingdevices are also actuated from the shaft E through the medium oflongitudinal shafts G, located one at either side of the machineframeand driven by means of bevel-gear g g and h h from acr0ss-shaft,H,actuated from the main drivingshaft E by means of gears eand h, as clearly shown in Figs. 1 and 2.

In the particular form of the cloth-carrier B herein shown the sideframes or castings B, which are located opposite each other at eitherside of the machine-frame, are held at their lower ends inlongitudinalguide-grooves a, formed in the side pieces of the machineframe, asclearly shown in Figs. 2, 3, 4, 6, and 7. These frames or castings B Bare reciprocated by devices constructed to retain them accuratelyopposite each other, the ends of the two parallel folding-bars B beingconnected with the said castings' in such manner as to be verticallymovable thereon, for a purpose which will hereinafter appear. 7

I The cloth-carrier, consisting of the end castings B B andfolding-plates B B, may be actuated in any suitable manner from theshaft F to give it a reciprocating movement between the clamping devices0 O. A preferred device for this purpose is,however,herein shown,whichis constructed as follows: The said castings B B are cast upon orattached to horizontal rack-bars I, extending from the said castingstoward the end of the machine adjacent to the driving-shaft and havingbearings in the guide-groove a a, said bars being desirably madein theform of vertically-deep, flanged, and apertured castings, having theirflanged lower edges engaged with the guidegrooves. By this constructionthe racks proper are brought considerably above the guides, as necessaryin the construction shown to give room for other parts of the foldingmechanism.

Engaged with the rack-arms I are two gearwheels, J, which intermesh attheir opposite sides with stationary rack-bars K, engaged opposite toand parallel with the rack-bars I. Said gear-wheels are mounted upon across shaft, J, having bearings in a frame, L, which is given areciprocating movement by suitable connection with a crank-pin,f, upon acrankarm,F,attached to the upper end of the shaft F.

As herein shown, the frame I is mounted to slide in guide-grooves a inthe machineframe, and is actuated from the shaft F by means of atransverse slot, L, in the fra'mel, with which the crank-pin f isengaged, the crank-pin preferably being provided with a slide-block, f,fitted in the said slot L. The part of the frame L in which the slot Lis formed is, of course, in this construction, located in a plane abovethat of the crank-arm Fand the upper end of the shaft F, so that theframe may pass freely backward and forward over the latter as it ismoved by the crank.

In the operation of the devices above described it is entirely obviousthat when the frame L is moved through a certain distance the gear J,being engaged with the stationary rack K, and being given thereby acircumferential movement equal to their bodily movement, will cause theracks land the cloth-carrier to move through a distance equal to twicethe space traversed by the said frame. In the use of a single crank withconnections constructed in the usual manner it would obviously-benecessary to employ a crank-arm of twice the length of that herein shownin order to obtain the same extent of throw in the clothcarrier B as isobtained by the construction illustrated, and the latter, therefore,possesses important advantages in enabling the machine to be made verycompact, so that it will take up much less room and require much lessweight in the parts than would otherwise be necessary.

The clamping devices 0 G comprise, as their essential parts, stationaryupper clamping plates or jaws, C and lower vertically-movable clamping-plates, C, which are moved relatively to the upper jaws in such mannerthat thejaws of a clamp are opened when the cloth-carrier approaches theclamp and are closed so as to grip the fold of cloth thrust between thejaws by the folder-bars B at the moment the latter reaches the extremelimit of its movement toward the clamp. The bars B B are, as shown,located in a plane above the upper clamp-plate, O and means are providedfor automatically moving said bars in such manner that the bar remotefrom the clamp will be lowered or depressed into position to enterbetween the jaws of the clamp as the cloth-carrier approaches thelatter, the parts being so located that the bar adjacent to theclamp-plate G will pass freely over and the lowered bar will passclosely beneath the said plate, so as to carry the fold of cloth beatween the said plate and the movable plate or jaw 0 Such verticalmovement of the carrier-bars B is obviously necessary in order to enablethe cloth fold to be carried between the clamp-jaws, for the reason thatthe cloth web passing from the guide-roller D between the folder-bars Bwill be drawn over the bar nearest the middle of the path of thecarrier, the bar over which the cloth is drawn being the one which isremote from the clamp toward which the carrier is moving, as will bemade clear by an inspection of Figs. 2 and 3. The clamp-jaws areconstructed to act with a yielding pressure, and are moved in suchmanner as to close upon the bar and cloth at the moment the carrier hasreached the limit of its movement toward the clamp. One or both jaws ofsaid clamp is preferably roughened, and the bars B B are made smooth, sothat when the carrier begins its backward movement, and the bar engagedwith the jaws is thereby released therefrom, said bar will slip frombetween the folds of the cloth and the folded edge of the latter will bewith certainty gripped in the clamp.

In the particular construction of the parts above mentioned in themachine herein shown the bars 13 B are attached at their ends to slidingblocks I) I), mounted in vertical guide grooves in the castings B B, andare sustained at the upper limit of their movement by springs b I),applied between the lower ends of said blocks Z) Z) and stationary partsof said castings. The slides I) b are moved downwardly in opposition tothe action of the springs I) b by means of inclined or cam surfaces b"b" upon parts of the machine-frame adjacent to the clamps constructed toact upon suitablylocated projections upon the slides b b, saidcam-surfaces, in the particular construction shown, being formed uponstationary bent bars B 13, adapted to engage anti-friction rollers I),mounted upon pins 1), fixed in plates b attached to the said slides. Thebars B adjacent to the clamp O, are, as shown, located in alower planethan those at the ends of the clamp C, and the roller b", which isactuated by the said bar, is correspondingly located, so that the barsand rollers at opposite ends of the machine may operate withoutinterfering with each other.

The lower clamp plates or jaws, C of the ICC clamps C and O are held atthe upper limit of their movement by means of spiral springs O, and arethrown downwardly at the required intervals by the actionof cams G,attached to the shafts G upon the ends of verticallymovable cross-pieces0 connected with the clamp-plates by vertical rods 0 The said cams G arepreferably made of the shapeindicated in Figs. 4 and 5, and are adaptedto throw the said clamp-plate G downward somewhat rapidly upon theapproach of the cloth-carrier, and to suddenly release the said plate soas to permit it to promptly engage the cloth at the moment the bar 13 ofthe carrier has fully entered between thejaws of the clamp.

The bars B B are preferably united with the slides 11 b by aspringconnection permitting a slight upward yielding ofthe bars when themovable clamp-plates G are thrown upwardly toward them, such yieldingofthe bars obviously being desirable in order to enable the roughenedunder face of the clamp-plate O to properly engage the cloth. In theparticular construction herein shown, the slides b b are provided withhorizontal projections or flanges b", forming seats for the bars B B,and to which the said bars are connected by means of vertical bolts orstuds If, secured in the bars and extending downwardly through aperturesin the flanges b, said bolts being provided upon their lower ends withheads or collars, between which and the flanges are placed coiledsprings b, acting to hold the bars movably in contact with the flangesand adapted to permit the bars to yield upwardly for the purpose setforth. Any lateral movement of the said bars is more effectuallyprevented by studs b", inserted through the bars and into the flangesI), as clearly shown in Figs. 6 and 7.

In order to prevcntthe weight of the folded cloth between the clampsfrom drawing the folded ends thereof out of the clamps when the latterare opened to admit the folder-bars B transverse boards or planks M arepreferably placed upon the frame between the clamps, upon which thefolds may rest. The surface formed by these boards is so located as tocome in the same plane with the lower clamps, 0", when the latter are atthe lower limit of their movement, and in order to prevent the foldededges of the cloth from slipping from the said lower clamp-plates whenthe latter are moved vertically, movable planks N are preferablyemployed, which are attached at one edge to and move with theclamp-plates and are supported at their opposite edges upon a level withthe boards M. By this construction continuous surfaces are formed uponwhich the ends of the folded cloth adjacent to the clamps may rest, andin order to effectually avoid liability of the cloth slipping backwardly upon the boards N, by reason of the shaking movement of the outeredge thereof, said board is preferably covered with a layer, N, ofbagging or other kind of cloth, rubber, or similar material, upon whichthe cloth being folded will not readily slip. p

In the particular construction herein shown in the parts mentioned theboards N are provided at their ends with laterally-projecting pins, asindicated in dotted lines at a, Fig. 3, constructed to engage ears n,cast upon the plate 0. Said boards, also, are shown as sustained attheir opposite or inner ends by means of pins a resting upon a ledge, aof the machine-frame, upon which the ends of the boards' M are alsosupported. The layer N upon the board N is preferably extended from thesaid board over the surface of the clamp-plate G, and is secured to awooden strip, N", secured in a rabbet in the edge of said plate, asshown in Fig. 3. The said plate (J is preferably made of cast metal andprovided with depending flanges at both edges to give the requisitestiffness thereto. Said plate also is, as shown, held or guided initsvertical movement by means of studs 0, passing through verticalguide-slots c, formed in a transverse metal casting, O to the upperflanged edge of which the clamp-plate O is bolted, and which is providedwith downwardly-projecting parts C having guide-bearings c at theirlower ends for the rods 0, forming supports for the lower ends of thesprings 0*, as clearly shown in Figs. 3 and 4t.

, In beginning the operation of folding in the machine described thecloth is placed over the guide-rollers D and D, and the end thereofpassed through the slot between the folderbars B 13*. When the machineis started,the end portion of the cloth passing around one of thefolder-bars will be carried thereby into one of the clamps, O or O, andgripped. In the succeeding movement of the carrier toward the oppositeclamp, the cloth. will be drawn through the folder-bars and laid orextended horizontally over the boards M and N to the oppositeclamp,where another fold will be similarly gripped. When the carrieragain reaches the clamp in which the end first gripped is held, theclamp will be opened and receive another fold without effecting therelease of the end first gripped, for the reason that the first layer ofcloth will be sustained upon the boards M and N, and there will benothing to cause the withdrawal of said-end from between the clamp-jaws.In the continued action of the machine successive layers or folds ofcloth are laid over the boards M and are gripped in the clamps in themanner described until a pile or stack of sufficient size is formed,when the folded cloth is removed from the machine.

In order to facilitate the removal from between the clamp-jaws of thefolded edges of the cloth, means may be provided for throwing andholding downwardly the lower clampplate, 0 against the action of theliftingsprings beneath it. A devicefor this purpose is shown in Fig. 8,such device consisting of a bar, Q, provided with a longitudinal slot,q,

in the lower end,and connected with the crossbar 0 by means of a stud,q, inserted through the slot, and a hand-lever, Q, pivoted to thecasting C and the lever Q. A spring, Q", is applied to hold the bar Q atthe upper limit of its movement, the stud q and slot q being so arrangedthat when the bar is in this position the stud will be in the upper partof the slot, so that the bar 0'' and the stud will be free to movedownwardly when the clamp is opened in the operation of the machine. Thelever Q stands usually horizontal, and the parts are so arranged that byswinging said lever downwardly the bar Q will be moved downward and thebar 0 depressed sufficiently to free the cloth held in the clamp. Thesaid lever is preferably provided with a stop or pin, (f,- adapted toengage the bar Q when the pivot between the bar and lever has beencarried slightly past astraightline drawn through the stud q and thepivoted axis of the lever, so that the bar C may be locked in positionto hold the clamp open while the folded cloth is being removed from thema chine.

A construction is herein provided in the clamp O and O and the devicesfor operating the latter,whereby these parts may be moved bodily'towardand from each other upon the machine-frame for the purpose of changingthe length of the folds in the cloth when desired, devices being alsoprovided for adjusting the throw of the cloth-carrier to correspond withthe position of the clamps. To permit such bodily movement of theclamps,the castings 0, upon which the clamps are sustained, are mountedto slide longitudinally upon the machine-frame, and screw-shafts 0, heldin a suitable bearing constructed to prevent longitudinal movementtherein, and provided at their opposite end portions with right and lefthand screw-threads,are engaged with the said castings, so that byturning the screw-shafts the castings and the clamps thereon may bemoved equally toward or away from each other. In connection with theclamps made bodily adjustablein this manner, the crank-pin f of thecrank-arm F is made adjustable in a slot, f, in the said arm, so thatthe throw of the crank may be adjusted to correspond with the distanceapart of the clamps.

As herein shown and preferably constructed, the screw-shafts O areprovided with sp rocketwheels 0, over which is trained a chain belt,Oflwhereby both shafts may be turned equally by power applied to one ofthem. The screwshafts, as has also been shown, are connected with thecastings O by passing through threaded apertures in lugs 0 upon saidcastings, and the latter are provided with ribs 0 entering guide-groovesa, formed in the side pieces of the frame parallel with and below thegrooves a. \Vhen the clamps are made adjustable in the manner described,the cambars B are bolted to the castings O, as shown, so as to move withthe latter and to always retain their proper position relatively to theclamp-plates.

Each of the cams G, by which the clampplates are actuated, instead ofbcing'fixed upon the shaft G, is desirably constructed to slidelongitudinally but not to rotate upon the said shafts, the connectingdevice for this purpose herein shown consisting of a spline and groove,and the cam is provided with acollar orsleevc, G provided with anannular projection or rib, g, which is engaged by a downwardlyprojectingpart, 9 rigidly connected with the casting 0, whereby when the saidcasting is moved the cam is carried with it,and is thereby alwaysretained in operative position with relation to the bar C The operationof adjusting the throw of the cloth-carrier to the distance apart of theclothclamps may be readily accomplished when the space between theclamps is to be increased by first setting the clamps the desireddistance apart, placing the crankarm F parallel with the sides of themachine, loosening the crankpin f in the slot of the crank-arm, and thenmoving the frame L, together with the crankpin, until the bar B of thecloth-carrier has fully entered between the clamp-plates C and C". Inlessening the distance between the clamps, so as to make shorter folds,the crankarm is placed in the same position and the crank-pin loosened,when, .by moving the clamps toward each other, the cloth-carrier and theframe L, together with the crank-pin, may be shifted accurately intoposition for operation.

A machine constructed generally as above described may obviously be usedin mills for folding goods, or in any other place where such machinesmay be employed. The machine herein shown, however, is more especiallyintended for use in preparing bagging or other cloth in the manufactureof bags to facilitate the folding and cutting of the cloth preparatoryto sewing the bags. For this purpose the said machine is provided with aknifeguide, P, arranged transversely of the machine midway between theclamps O and C, said knifeguide being herein shown in the form of twoparallel bars, 1), bolted at their ends to the side pieces of the frameand slightly separated to provide a guide-slot for a knife or cutter.

In a machine made for forming bag-blanks the distance between the clampsis made equal to twice the width of a finished bag, so that by cuttingacross the middle of the pile of folded cloth a series of foldedbag-blanks'are formed of proper size, and only requiring sewing upon oneside and end to make a finished bag.

In order to facilitate the cutting of the several layers or thicknessesof cloth in the manner described, a second upper knife-guide, P, ispreferably used, herein shown as formed by two transverse bars securedupon arms 1?", pivoted to the machine-frame in such manner that the saidguide P may be thrown up out of the way during the operation of folding,and lowered into position with its guide-slot accurately over theguide-slot of the lower guide, P, prior to the operation of cutting. Theupper guide is preferably constructed to rest with its weightupon thepile of cloth when lowered, so as to hold the layers in a compact massand prevent them from shifting during the operation of cutting.

The essential feature of novelty in the folding devices is that whereby,in connection with cloth-clamping devices, the separately-movablefolder-bars are alternately lowered to engage the said clamping devices.The movement of the said bars relatively to the clamps, as set forth,may obviously be accomplished otherwise than by the particular mechanismshown, and our invention is not therefore limited to the said particularmechanisms, except as the latter are specifically claimed herein.

We claim as our invention- 1. The combination, with two cloth-clampslocated in the same horizontal plane and a horizontally-reciprocatingcloth-carrier provided with horizontally-arranged and vertically-movablefolder-bars, of springs upon the cloth-carrier applied to sustain thefolderbars in a plane above the cloth'clamps, and stationarycam-surfaces upon the machineframe engaging and thrusting downwardly thesaid folder-bars, whereby at each reciprocatory movement of thecloth-carrier one folderbar is caused to enter and the other to passover one of the cloth-clamps, substantially as described.

2. The combination, with the cloth-clamps of a folding-machine,comprising upper stationary clamp plates and lower movable plates, andmeans for actuating said movable plates, of a reciprocating clothcarriercomprising side frames or castings, B B, vertically-movable blocks bbpmounted upon said castings, folder-bars B B", connected with saidblocks, and means for moving said blocks vertically to bring the barsinto position for engagement with the clamps, said bars havingupwardly-yielding connection with the blocks, substantiallyas and forthe purpose set forth.

3. The combination, with the cloth-clamps of a folding-machine,comprising upper stationary clamp-plates andlower movable plates, andmeans for actuating said movable plates, of a reciprocating clothcarrier comprising folder-bars B B, side frames or castings, B

B, vertically-movable blocks 12 12, mounted upon said castings andprovided with flanges or projections forming seats for the folder-bars,springs b applied to normally hold the said bars in contact with thesaid seats, and means for moving said blocks vertically to bring thebars into position for engagement with the clamps, substantially as andfor the purpose set forth.

4. The combination, with a reciprocating cloth-carrier, 0f cloth-clampscomprising up per stationary plates, 0 lower vertically-movable plates,O, springs applied to throw the movable plates upwardly, longitudinalbars 0 rods 0, connecting the said bars with the plates 0 and rotatingcam-shafts G, provided with cams G, acting upon said bars 0substantially as and for the purpose set forth.

5. The combination, with the cloth-carrier and cloth-clamps, eachcomprising two horizontal plates or jaws, of which the lower one isvertically movable, of boards N, sustained at one of their edges uponthe machine-frame and flexibly connected at their opposite edges withthe said movable clamp-plates, substantially as and for the purpose setforth.

'6. The combination, with the cloth-carrier and cloth-clamps, eachcomprising two horizontal clamp plates or j aws, of which the lower one,0 is vertically movable, of boards N, sustained. at their edges upon themachine-frame and flexibly connected with the movable clampplate, and asheet or layer of cloth, rubber, or similar material covering the uppersurface of the boards and clamp-plates, substantially as and for thepurpose set forth.

7. The combination, with the reciprocating cloth carrier or folder of afolding-machine, of means for actuating the folder, consisting of astationary rack-bar, a reciprocating frame, a crank connected with thesaid frame for actuating the latter, a gear-wheel mou'nted'in the frameand engaged with the stationary rackbar,and a second rack-bar connectedwith the cloth-carrier and engaged with the gear-wheel, substantially asdescribed.

8. The combination, with the cloth-carrier of a folding-machine, ofactuating devices for said carrier, consisting of a rotating shaft andcrank, a reciprocating frame provided with a transverse slot engagedwith the crank-pin, a stationary rack-bar, a gear-wheel mounted in theframe and engaged with the said stationary rack-bar, and a secondrack-bar connected with the cloth-carrier and engaged with the saidgear-wheel, substantially as described.

9. The combination, with the cloth-carrier of a folding-machine, ofactuating devices for said carrier, consisting of a rotating crankshaft,a reciprocating frame provided with a transverse slot engaged with thecrank-pin, a stationary rack bar, a gear wheel mounted upon the frameand engaged with the said stationary rack-bar, and a second rack-barconnected with the cloth-carrier and engaged with the gear-wheel, thesaid crank-pin being adjustable longitudinally of the cranlearni,whereby the throw of the crank may be adj usted, substantially asdescribed.

10. The combination, with the machine frame and upper and lowerclamp-plates, o'f transversely-arranged vertical plates or castings 0having sliding connection with the machine-frame, affording rigidsupport to the upper stationary clamp-plates, and bearings for the lowermovable plates, and means for moving said casting upon the frame for thepurpose of adjustment, substantially as described.

11. The combination, with the machineframe,cloth-elamps, and frames orcastings 0 supporting the said clamps and having sliding connection withthe machine frame, of longitudinally-arranged shafts G, cams G foractuating the clamps, having sliding connec tion with the shafts, meansconnecting the said cams with the clamps,whereby the said clamps areactuated by the cams, and arms or projections upon the castings O,engaged with the camsfor shifting the latter upon the shafts when thesaid clamps are moved, substantially as described.

12. The combination, with the machineframe, the movable clamp-jaw C, andbar C", connected with the latter, of a bar, Q, and lever Q, pivotallyconnected with the said bar 0 and the machine-frame and with each other,and a stop constructed to limit the rotation of the lever in onedirection, substantially as and for the purpose set forth 13, Thecombination, with the frame, the cloth-clamps, and cloth-carryingdevices of a folding-machine, of a transversely-arrangedknife-guideloeated upon the machine-framebetween said clamps andadjacent to the cloth held therein,whereby the several folds of clothheld in the clamps may be severed by a knife moved along the said guide,substantially as described.

14. The combination, with the cloth-clamps and cloth-carrying devices ofa folding-machine, of a stationary transversely-arranged knife-guideattached to the 1naehine-framebetween the cloth clamps and below thecloth layers held in the clamps, a second movable guide adapted to beplaced over the cloth and the lower guide, and means sustaining saidmovable guide in position parallel with the stationary guide,substantially as described.

15. The combination, with the cloth-clamps of a folding-machine, of alower stationary knife-guide attached to the machine-frame, and an uppermovable knife-guide pivotally supported upon the said frame,substantially as described.

In testimony that we claim the foregoing as our invention we affix oursignatures in presence of two witnesses.

SAMUEL K. \VHITE. SAMUEL T. LOOKWOOD.

\Vitnesses:

G. CLARENCE POOLE, M. E. DAYTON.

